US2590811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkage resistance treatment of woolen goods
Assignee: Forstmann Woolen Co
•
Filing: 1950-04-13
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Granted: 1952-03-25
•
Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Zimmerman John
- 👤 Harold W Wolf
- 👤 Louis L Weiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:21
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE PROCESS OF IMPARTING SHRINK-RESISTANCE TO WOOLEN GOODS WITHOUT SUBSTANTIALLY IMPAIRING THEIR STRENGTH, COMPRISING ADJUSTING THE MOISTURE CONTENT OF SAID GOODS TO FROM ABOUT 10.5% TO ABOUT 12%, CONTACTING SAID GOODS IN A CLOSED CHAMBER AT A TEMPERATURE ABOVE 70* F. WITH FROM ABOUT 1 1/2 TO 3% CHLORINE GAS BASED ON THE WEIGHT OF SAID GOODS, AND NEUTRALIZING THE HYDROCHLORIC ACID FORMED ON SAID GOODS.
Claim 2
Dependent Claim
66 words
THE PROCESS OF IMPARTING SHRINK-RESISTANCE TO WOOLEN GOODS WITHOUT SUBSTANTIALLY IMPAIRING THEIR STRENGTH, COMPRISING ADJUSTING THE MOISTURE CONTENT OF SAID GOODS TO FROM ABOUT 10.5% TO ABOUT 12%, CONTACTING SAID GOODS IN A CLOSED CHAMBER AT A TEMPERATURE ABOVE 70* F. WITH FROM ABOUT 1 1/2 TO 3% CHLORINE GAS BASED ON THE WEIGHT OF SAID GOODS, AND NEUTRALIZING THE HYDROCHLORIC ACID FORMED ON SAID GOODS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |